The following table presents information necessary to calculate basic and diluted earnings per share for the periods indicated:



	Year Ended December 31,
(in thousands, except per share amounts)	2016			2015			2014
Earnings per common share calculation – basic
Income from continuing operations attributable to common shareholders	$	436,981		$	229,565		$	273,892
Amount allocated to participating securities	(6,304		)	(2,052		)	(2,687		)
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities	$	430,677		$	227,513		$	271,205
Discontinued operations, including gain on sale, attributable to common shareholders	382,842			19,750			18,197
Net income attributable to common shareholders – basic	$	813,519		$	247,263		$	289,402

Earnings per common share from continuing operations	$	4.81		$	2.55		$	3.08
Earnings per common share from discontinued operations	4.27			0.22			0.21
Total earnings per common share – basic	$	9.08		$	2.77		$	3.29

Weighted average number of common shares outstanding – basic	89,580			89,120			88,084



Earnings per common share calculation – diluted
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities	$	430,677	$	227,513	$	271,205
Discontinued operations, including gain on sale, attributable to common shareholders	382,842		19,750		18,197
Net income attributable to common shareholders – diluted	$	813,519	$	247,263	$	289,402

Earnings per common share from continuing operations	$	4.79	$	2.54	$	3.06
Earnings per common share from discontinued operations	4.26		0.22		0.21
Total earnings per common share – diluted	$	9.05	$	2.76	$	3.27

Weighted average number of common shares outstanding – basic	89,580		89,120		88,084
Incremental shares issuable from assumed conversion of:
Common share options and share awards granted	323		370		384
Weighted average number of common shares outstanding – diluted	89,903		89,490		88,468